Firework material vibrating screen

Abstract

The utility model discloses a firework material vibrating screen, which belongs to the technical field of firework equipment, and comprises a screen mesh component and an oscillator component, the screen mesh component comprises a plurality of vibrating screen meshes and a bottom screen frame inclined plate, and material holes and material collecting channels communicated with the material holes are formed in the edges of each vibrating screen and the inclined plate of the bottom screen frame. The oscillator assembly comprises a base and a vibration motor. When the firework powder is screened in the screen assembly, the firework powder can be screened step by step through the multiple layers of vibration screens, the oscillator assembly generates the vibration effect, and the screening speed of the vibration screens is increased. Materials in each layer of vibration screen mesh gradually move towards the material holes under the action of vibration, move to the material collecting channel from the material holes and are finally collected by the material collecting channel, the vibration screen meshes do not need to be replaced frequently, the materials only need to be poured towards the vibration screen mesh of the first layer, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireworks equipment, in particular to a fireworks material vibrating screen. Background Art

[0002] Fireworks drugs need to be screened before mixing, otherwise large particles of drugs will be crushed under pressure during the mixing process, which may cause combustion and explosion. After each round of screening, the current fireworks drug screening machine needs to remove the drugs on each layer of the screening plate and replace them with new drugs for the next round of screening, resulting in low screening efficiency. Some screening machines use a shaking table for screening. Due to insufficient shaking, it is very easy for drugs to be blocked in the grid, resulting in the inability of subsequent drugs to fall, which also affects the screening efficiency. Utility Model Content

[0003] The utility model aims to provide a fireworks material vibrating screen to solve the problem of low screening efficiency of fireworks drug screening machines in the prior art.

[0004] Provided is a fireworks material vibrating screen, comprising:

[0005] A screen assembly, comprising a plurality of oscillating screens with mesh apertures decreasing from top to bottom and a bottom screen frame inclined plate arranged at the bottom of the screen assembly, wherein the edges of each of the oscillating screens and the bottom screen frame inclined plate are provided with material holes and a collection channel connected to the material holes;

[0006] The oscillator assembly is arranged at the bottom of the screen assembly.

[0007] Furthermore, a plurality of damping springs are arranged between the bottom screen frame inclined plate and the base.

[0008] Furthermore, a rubber dust cover is arranged outside the damping spring.

[0009] Furthermore, a plurality of buckles are circumferentially arranged on the side surface of the inclined plate of the bottom screen frame, and a plurality of screen plate hooks which can be correspondingly buckled with the buckles are circumferentially arranged on the first oscillating screen at the top of the screen assembly.

[0010] Furthermore, the bottoms of the plurality of oscillating screens and the bottom screen frame inclined plates are inclined at an angle to the horizontal plane toward the material hole, and the inclination angle is 1° to 3°.

[0011] Furthermore, the oscillator assembly includes a vibration motor, a flexible shaft and a vibration module. The vibration module is arranged at the bottom of the screen assembly, and the vibration module is connected to the vibration motor through a flexible shaft transmission.

[0012] Furthermore, the vibration motor and the vibration module are separated by a wall.

[0013] Furthermore, the vibration motor uses an explosion-proof motor.

[0014] Furthermore, a flexible shaft sleeve is provided on the outer sleeve of the flexible shaft.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When fireworks are screened in the screen assembly, they can be screened step by step through multiple layers of oscillating screens. The oscillator assembly produces vibrations, which speeds up the screening speed of the oscillating screens. Under the action of vibration, the materials in each layer of the oscillating screen gradually move toward the material holes, and move from the material holes to the aggregate channel, and finally are collected by the aggregate channel. There is no need to frequently replace the oscillating screens, and only the materials need to be dumped into the oscillating screens on the first layer, which improves the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a fireworks material vibrating screen;

[0019] Figure 2 An exploded schematic diagram of a screen assembly provided in an embodiment of the utility model;

[0020] Figure 3 A schematic structural diagram of an oscillator assembly provided in an embodiment of the utility model.

[0021] In the figure: 1. screen assembly; 11. oscillating screen; 111. screen plate hook; 12. bottom screen frame inclined plate; 121. buckle; 13. aggregate channel; 14. material hole; 2. oscillator assembly; 21. vibration motor; 22. flexible shaft; 221. flexible shaft sleeve; 23. vibration module; 3. vibration damping spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 As shown, in the embodiment of the utility model, a fireworks material vibrating screen includes a screen assembly 1 and an oscillator assembly 2. The screen assembly 1 includes a plurality of vibrating screens 11 whose mesh apertures decrease from top to bottom and a bottom screen frame inclined plate 12 arranged at the bottom of the screen assembly 1. The edges of each vibrating screen 11 and the bottom screen frame inclined plate 12 are provided with material holes 14 and a collection channel 13 connected to the material holes 14. The oscillator assembly 2 is arranged at the bottom of the screen assembly 1, and can make the screen assembly 1 vibrate.

[0025] After the oscillator assembly 2 is started, the vibration is transmitted to the bottom screen frame inclined plate 12 and to the oscillating screen mesh 11 of each layer, and the sieving efficiency of the drug on the screen mesh is accelerated by the vibration. At the same time, since the drug is in an active state during vibration, even if some drug particles are blocked in the mesh, they will quickly break away under the action of vibration and will not affect the subsequent screening of the drug.

[0026] See also Figure 1 and Figure 2 As shown, a plurality of damping springs 3 are arranged between the bottom screen frame inclined plate 12 and the oscillator assembly 2. The damping springs 3 can increase the amplitude of the screen assembly 1. By controlling the strength of the damping springs 3, the amplitude of the screen assembly 1 is kept within a certain range. The damping springs 3 are arranged in a ring shape, so that the screen assembly 1 only ensures vibration in the vertical direction. At the same time, the damping springs 3 can also effectively stabilize the screen assembly 1 and reduce the noise generated when the vibrating screen vibrates.

[0027] Furthermore, a rubber dust cover is provided outside the damping spring 3. Since the material may cause some dust during the vibration process, the rubber dust cover can prevent the external dust from contacting the spring. In addition, the rubber dust cover also has the function of stabilizing the spring to prevent the spring from moving sideways.

[0028] The side of the bottom screen frame inclined plate 12 is provided with a plurality of buckles 121 along the circumferential direction, and the first oscillating screen 11 at the top of the screen assembly 1 is provided with a plurality of screen plate hooks 111 that can be buckled with the buckles 121 along the circumferential direction. The hanging ring on the buckle 121 can be extended upward to hang on the screen plate hook 111, and then the buckle 121 is buckled, so that the bottom screen frame inclined plate 12 and the multi-layer oscillating screen 11 can be fixed as a whole to prevent them from detaching during vibration. The length of the hanging ring on the buckle 121 can be adjusted according to the actual number of layers of the oscillating screen 11, and the entire screen assembly 1 can be fixed by a plurality of buckle 121 components, which has a simple structure and a good fixing effect.

[0029] The bottom of the vibrating screen 11 and the bottom screen frame inclined plate 12 has an angle of inclination toward the material hole 14 with a horizontal plane, and the inclination angle is 1° to 3°. By setting this inclination angle, when the vibrating screen 11 and the bottom screen frame inclined plate 12 vibrate, the material will follow the slope of the inclination angle and slowly move toward the material hole 14, and finally converge and discharge from the gathering channel 13, without manual cleaning. The slope cannot be set too large to prevent the discharge speed from being too fast, resulting in incomplete screening.

[0030] See also Figure 3 As shown, the oscillator assembly 2 includes a vibration motor 21, a flexible shaft 22 and a vibration module 23. The vibration module 23 is arranged at the bottom of the screen assembly 1, and the vibration module 23 is connected to the vibration motor 21 through the flexible shaft 22. The flexible shaft 22 is a component that can transmit vibration. When the vibration motor 21 vibrates, the vibration module 23 is driven to vibrate through the transmission effect of the flexible shaft 22, and the vibration module 23 then drives the entire screen assembly 1 to vibrate. Through the transmission effect of the flexible shaft 22, the distance between the vibration motor 21 and the fireworks material in the screen assembly 1 can be increased to prevent the vibration motor 21 from generating electric sparks and causing dangerous situations.

[0031] The vibration motor 21 is separated from the vibration module 23 by a wall. On the basis of increasing the length of the flexible shaft 22, the vibration motor 21 is further isolated from the vibration module 23 by a wall to prevent the electric spark of the vibration motor 21 from contacting the screen assembly 1.

[0032] The vibration motor 21 uses an explosion-proof motor. An explosion-proof motor is a motor that does not generate electric sparks to ignite surrounding flammable and explosive items. In addition, the vibration motor 21 is almost not in contact with fireworks materials, which effectively improves the safety during vibration.

[0033] The outer sleeve of the flexible shaft 22 is provided with a flexible shaft sleeve 221 , which enters from the bottom of the oscillator assembly and forms a sealed base around it, which can completely isolate the flexible shaft 22 from the outside and prevent materials from entering the flexible shaft sleeve 221 .

[0034] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A fireworks material vibrating screen, characterized in that: include: A screen assembly (1) comprising a plurality of oscillating screens (11) whose mesh apertures decrease from top to bottom and a bottom screen frame inclined plate (12) arranged at the bottom of the screen assembly (1), wherein a material hole (14) and a material collection channel (13) communicating with the material hole (14) are provided at the edge of each of the oscillating screens (11) and the bottom screen frame inclined plate (12); An oscillator assembly (2), wherein the oscillator assembly (2) is arranged at the bottom of the screen assembly (1).

2. A fireworks material vibrating screen according to claim 1, characterized in that: A plurality of damping springs (3) are arranged between the bottom screen frame inclined plate (12) and the oscillator assembly (2).

3. A fireworks material vibrating screen according to claim 2, characterized in that: A rubber dust cover is arranged outside the vibration-damping spring (3).

4. A fireworks material vibrating screen according to claim 1, characterized in that: The side surface of the bottom screen frame inclined plate (12) is provided with a plurality of buckles (121) along the circumferential direction, and the first oscillating screen (11) at the top of the screen assembly (1) is provided with a plurality of screen plate hooks (111) along the circumferential direction that can be correspondingly buckled with the buckles (121).

5. A fireworks material vibrating screen according to claim 1, characterized in that: The bottoms of the plurality of oscillating screens (11) and the bottom screen frame inclined plates (12) are inclined at an angle to the horizontal plane toward the material hole (14), and the inclination angle is 1° to 3°.

6. A fireworks material vibrating screen according to claim 1, characterized in that: The oscillator assembly (2) comprises a vibration motor (21), a flexible shaft (22) and a vibration module (23); the vibration module (23) is arranged at the bottom of the screen assembly (1); and the vibration module (23) is transmission-connected to the vibration motor (21) via the flexible shaft (22).

7. A fireworks material vibrating screen according to claim 6, characterized in that: The vibration motor (21) and the vibration module (23) are separated by a wall.

8. A fireworks material vibrating screen according to claim 6, characterized in that: The vibration motor (21) uses an explosion-proof motor.

9. A fireworks material vibrating screen according to claim 6, characterized in that: The outer sleeve of the flexible shaft (22) is provided with a flexible shaft sleeve (221).

Images